123223100021 has 8 divisors (see below), whose sum is σ = 143213288640. Its totient is φ = 103829633568.

The previous prime is 123223100017. The next prime is 123223100051. The reversal of 123223100021 is 120001322321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123223100021 - 2² = 123223100017 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123223100051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149180096 + ... + 149180921.

It is an arithmetic number, because the mean of its divisors is an integer number (17901661080).

Almost surely, 2^123223100021 is an apocalyptic number.

It is an amenable number.

123223100021 is a deficient number, since it is larger than the sum of its proper divisors (19990188619).

123223100021 is an equidigital number, since it uses as much as digits as its factorization.

123223100021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298361083.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 123223100021 its reverse (120001322321), we get a palindrome (243224422342).

The spelling of 123223100021 in words is "one hundred twenty-three billion, two hundred twenty-three million, one hundred thousand, twenty-one".